FLUID PAN

On the THM-R1 transmission remove both sumps and replace both gaskets. This will more completely drain the system.

Raise and safely support the vehicle in a level plane. Place a drain pan under the transmission sump. Remove the dipstick on vehicles so equipped. On vehicles with locking dipsticks, tilt the top of the dipstick to unlock.

Loosen and remove the oil filler tube from the sump pan if not equipped with a drain plug. Be ready to catch fluid as it drains.

Remove the sump pan drain plug and catch the draining fluid.

Note the positions of the pan holder at each bolt and loosen and remove the bolts.

Remove the pan and gasket. Remove the screws from the filter. Note their positions. Check that the O-ring from the filter did not stick to the transmission valve body.

Install the new filter and O-ring. Replace the screws in their original positions. On the 4HP 22, torque to 6 ft. lbs. (8 Nm). On the THM-R1, torque to 13-15 ft. lbs. (18-21 Nm).

Clean the pan and magnets. Replace the pan gasket and install the pan on the transmission. Replace the pan holders and bolts at their original positions. On the 4HP 22, torque to 4.5-5.0 ft. lbs. (6-7 Nm). On the THM-R1, torque to 7-9 ft. lbs. (10-13 Nm).

Replace the gasket or crush washer on the drain plug and on the 4HP 22, torque to 11-12 ft. lbs. (15-17 Nm) for transmissions with a M10 drain plug, 18 ft. lbs. (25 Nm) on the THM-R1 or 29-33 ft. lbs. (40-46 Nm) for transmissions with a M18 drain plug.

Fill the transmission with the proper amount of DEXRON®II automatic transmission fluid through the dipstick tube on vehicles with dipsticks or through the fill plug on transmissions without a dipstick. The transmission will take approximately 3.2 quarts (3.0 liters) of ATF.

Check the fluid level once completed.

ADJUSTMENTS

Shift Linkage Cable

See Figure 2

Fig. Fig. 2: Place the shifter into this position for adjustment

Place the gear selector lever in the
P
position.

From under the vehicle, hold the bolt on the end of the transmission mounted shift lever with tool 24 5 210 or equivalent to prevent the cable from being damaged. Loosen the bolt.

On the injection system throttle body, loosen the 2 locknuts at the end of the throttle cable and adjust the cable until there is a play of 0.010-0.030 inches.

Loosen the locknut and lower the kickdown stop under the accelerator pedal. Have someone depress the accelerator pedal until the transmission detent can be felt. Then, back the kickdown stop back out until it just touches the pedal.

Check that the distance from the seal at the throttle body end of the cable housing is at least 1.732 inch from the rear end of the threaded sleeve. If this dimension checks out, tighten all the locknuts.